Mobile terminal and control method thereof

ABSTRACT

The present invention relates to a mobile terminal and a control method thereof. The mobile terminal displays a plurality of figures arranged in a first composition on a touch screen when a specific mode is locked, rearranges the plurality of figures in a second composition different from the first composition upon receiving a specific input, and determines whether to unlock the specific mode on the basis of a pattern which is input using the plurality of figures arranged in the first or second composition.

CROSS-REFERENCE TO RELATED APPLICATIONS

Pursuant to 35 U.S.C. §119(a), this application claims the benefit ofearlier filing date and right of priority to Korean Patent ApplicationNo. 10-2011-0130666, filed on 8 Dec. 2011, the contents of which areincorporated by reference herein in their entirety.

TECHNICAL FIELD

The present invention relates to a mobile terminal and a control methodthereof.

DISCUSSION OF THE RELATED ART

Terminals can be classified into a mobile terminal and a stationaryterminal according to mobility. The mobile terminal can be divided intoa handheld terminal and a vehicle mount terminal according toportability of users.

With increasing propagation of a mobile terminal including a touchscreen, various methods for locking/unlocking a touch screen areproposed.

Among the methods, a method of unlocking the touch screen using anunlocking pattern displays points through which a pattern can be inputon a screen and determines whether to unlock the touch screen bycomparing a pattern formed by touching points displayed on the screenwith a previously registered unlocking pattern.

SUMMARY

An object of the present invention is to provide a mobile terminal and acontrol method thereof to improve user convenience and provide auser-friendly unlocking method.

According to one aspect of the present invention, there is provided amobile terminal including: a touch screen; a memory configured to storean unlocking pattern for a specific mode; and a controller configured todisplay a plurality of figures arranged in a first composition on thetouch screen when the specific mode is locked, to rearrange theplurality of figures in a second composition different from the firstcomposition upon receiving a specific input, and to determine whether tounlock the specific mode on the basis of a pattern which is input usingthe plurality of figures arranged in the first or second composition.

According to another aspect of the present invention, there is provideda mobile terminal including: a touch screen including a panel forgenerating stereoscopic vision; a memory configured to store anunlocking pattern for a specific mode; and a controller configured todisplay a plurality of figures as stereoscopic objects when the specificmode is locked, to receive a pattern on the basis of the depths of theplurality of stereoscopic objects, and to unlock the specific mode whenthe received pattern corresponds to the unlocking pattern.

According to another aspect of the present invention, there is provideda method of controlling a mobile terminal, including: displaying aplurality of figures for receiving an unlocking pattern for a specificmode in a first area; displaying the plurality of figures in a secondarea different from the first area upon receiving a specific input;receiving a pattern corresponding to a trajectory generated by at leastone touched figure from the plurality of figures or the order oftouching figures; and entering the specific mode when the receivedpattern corresponds to the unlocking pattern.

The mobile terminal and control method thereof according to the presentinvention can improve user convenience and provide a user-friendlyunlocking method.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are included to provide a furtherunderstanding of the invention and are incorporated in and constitute apart of this application, illustrate embodiment(s) of the invention andtogether with the description serve to explain the principle of theinvention.

FIG. 1 is a block diagram of a mobile terminal according to anembodiment of the present invention;

FIG. 2 is a perspective view of the mobile terminal shown in FIG. 1;

FIGS. 3 and 4 illustrate operations of a touch pad of the mobileterminal shown in FIG. 2;

FIGS. 5 and 6 are views for explaining a method of displaying astereoscopic image using binocular parallax according to embodiments ofthe present invention;

FIG. 7 is a flowchart illustrating a method of controlling a mobileterminal 100 according to a first embodiment of the present invention;

FIG. 8 shows an example of initially arranging figures through which anunlocking pattern is input in the mobile terminal 100 according to thefirst embodiment of the present invention;

FIG. 9 shows an example of rearranging the figures in the mobileterminal according to the first embodiment of the present invention;

FIG. 10 shows an example of receiving an unlocking pattern using figuresin the mobile terminal according to the first embodiment of the presentinvention;

FIG. 11 is a flowchart illustrating a method of controlling the mobileterminal according to a second embodiment of the present invention;

FIGS. 12 and 13 show examples of arranging figures used to receive anunlocking pattern in the mobile terminal according to the secondembodiment of the present invention;

FIGS. 14 and 15 show examples of rearranging figures;

FIG. 16 is a flowchart illustrating a method of controlling the mobileterminal according to a third embodiment of the present invention;

FIGS. 17 and 18 show examples of displaying figures as three-dimensionalobjects in the mobile terminal according to the third embodiment; and

FIG. 19 shows an example of receiving a pattern using the figures shownin FIG. 18.

DETAILED DESCRIPTION

Arrangements and embodiments may now be described more fully withreference to the accompanying drawings, in which exemplary embodimentsmay be shown. Embodiments may, however, be embodied in many differentforms and should not be construed as being limited to embodiments setforth herein; rather, embodiments may be provided so that thisdisclosure will be thorough and complete, and will fully convey theconcept to those skilled in the art.

A mobile terminal may be described below with reference to theaccompanying drawings. In the following description, suffixes “module”and “unit” may be given to components of the mobile terminal inconsideration of only facilitation of description and do not havemeanings or functions discriminated from each other.

The mobile terminal may include a cellular phone, a smart phone, alaptop computer, a digital broadcasting terminal, personal digitalassistants (PDA), a portable multimedia player (PMP), a navigationsystem and/or so on.

FIG. 1 is a block diagram of a mobile terminal according to anembodiment of the present invention. Other embodiments, configurationsand arrangements may also be provided.

As shown, the mobile terminal 100 may include a wireless communicationunit 110 (or radio communication unit), an audio/video (A/V) input unit120, a user input unit 130, a sensing unit 140, an output unit 150, amemory 160, an interface 170, a controller 180, and a power supply 190.The components shown in FIG. 1 may be essential parts and/or a number ofcomponents included in the mobile terminal 100 may vary. Components ofthe mobile terminal 100 may now be described.

The wireless communication unit 110 may include at least one module thatenables radio communication between the mobile terminal 100 and a radiocommunication system or between the mobile terminal 100 and a network inwhich the mobile terminal 100 is located. For example, the wirelesscommunication unit 110 may include a broadcasting receiving module 111,a mobile communication module 112, a wireless Internet module 113, ashort range communication module 114 (or local area communicationmodule), and a location information module 115 (or position informationmodule).

The broadcasting receiving module 111 may receive broadcasting signalsand/or broadcasting related information from an external broadcastingmanagement server through a broadcasting channel. The broadcastingchannel may include a satellite channel and a terrestrial channel, andthe broadcasting management server may be a server that generates andtransmits broadcasting signals and/or broadcasting related informationor a server that receives previously created broadcasting signals and/orbroadcasting related information and transmits the broadcasting signalsand/or broadcasting related information to a terminal.

The broadcasting signals may include not only TV broadcasting signals,radio broadcasting signals, and data broadcasting signals but alsosignals in the form of a combination of a TV broadcasting signal and aradio broadcasting signal. The broadcasting related information may beinformation on a broadcasting channel, a broadcasting program or abroadcasting service provider, and may be provided even through a mobilecommunication network. In the latter case, the broadcasting relatedinformation may be received by the mobile communication module 112.

The broadcasting related information may exist in various forms. Forexample, the broadcasting related information may exist in the form ofan electronic program guide (EPG) of a digital multimedia broadcasting(DMB) system or in the form of an electronic service guide (ESG) of adigital video broadcast-handheld (DVB-H) system.

The broadcasting receiving module 111 may receive broadcasting signalsusing various broadcasting systems. More particularly, the broadcastingreceiving module 111 may receive digital broadcasting signals usingdigital broadcasting systems such as a digital multimediabroadcasting-terrestrial (DMB-T) system, a digital multimediabroadcasting-satellite (DMB-S) system, a media forward link only(MediaFLO) system, a DVB-H and integrated services digitalbroadcast-terrestrial (ISDB-T) systems. The broadcasting receivingmodule 111 may receive signals from broadcasting systems providingbroadcasting signals other than the above-described digital broadcastingsystems.

The broadcasting signals and/or broadcasting related informationreceived through the broadcasting receiving module 111 may be stored inthe memory 160. The mobile communication module 112 may transmit/receivea radio signal to/from at least one of a base station, an externalterminal and a server on a mobile communication network. The radiosignal may include a voice call signal, a video telephony call signal ordata in various forms according to transmission and reception oftext/multimedia messages.

The wireless Internet module 113 may correspond to a module for wirelessInternet access and may be included in the mobile terminal 100 or may beexternally attached to the mobile terminal 100. Wireless LAN (WLAN orWi-Fi), wireless broadband (Wibro), world interoperability for microwaveaccess (Wimax), high speed downlink packet access (HSDPA) and so on maybe used as a wireless Internet technique.

The short range communication module 114 may correspond to a module forshort range communication. Further, Bluetooth®, radio frequencyidentification (RFID), infrared data association (IrDA), ultra wideband(UWB) and/or ZigBee® may be used as a short range communicationtechnique.

The location information module 115 may confirm or obtain a location ora position of the mobile terminal 100. The location information module115 may obtain position information by using a global navigationsatellite system (GNSS). The GNSS is a terminology describing a radionavigation satellite system that revolves around the earth and transmitsreference signals to predetermined types of radio navigation receiverssuch that the radio navigation receivers can determine their positionson the earth's surface or near the earth's surface. The GNSS may includea global positioning system (GPS) of the United States, Galileo ofEurope, a global orbiting navigational satellite system (GLONASS) ofRussia, COMPASS of China, and a quasi-zenith satellite system (QZSS) ofJapan, for example.

A global positioning system (GPS) module is a representative example ofthe location information module 115. The GPS module may calculateinformation on distances between one point or object and at least threesatellites and information on a time when distance information ismeasured and apply trigonometry to the obtained distance information toobtain three-dimensional position information on the point or objectaccording to latitude, longitude and altitude at a predetermined time.

A method of calculating position and time information using threesatellites and correcting the calculated position and time informationusing another satellite may also be used. Additionally, the GPS modulemay continuously calculate a current position in real time and calculatevelocity information using the location or position information.

The A/V input unit 120 may input (or receive) an audio signal and/or avideo signal. The A/V input unit 120 may include a camera 121 and amicrophone 122. The camera 121 may process image frames of still imagesor moving images obtained by an image sensor in a video telephony modeor a photographing mode. The processed image frames may be displayed ona display unit 151, which may be a touch screen.

The image frames processed by the camera 121 may be stored in the memory160 or may be transmitted to an external device through the wirelesscommunication unit 110. The mobile terminal 100 may also include atleast two cameras 121.

The microphone 122 may receive an external audio signal in a call mode,a recording mode and/or a speech recognition mode, and the microphone122 may process the received audio signal into electric audio data. Theaudio data may then be converted into a form that can be transmitted toa mobile communication base station through the mobile communicationmodule 112 and output in the call mode. The microphone 122 may employvarious noise removal algorithms (or noise canceling algorithm) forremoving or reducing noise generated when the external audio signal isreceived.

The user input unit 130 may receive input data for controlling operationof the mobile terminal 100 from a user. The user input unit 130 mayinclude a keypad, a dome switch, a touch pad (constantvoltage/capacitance), a jog wheel, a jog switch and/or so on.

The sensing unit 140 may sense a current state of the mobile terminal100, such as an open/close state of the mobile terminal 100, a positionof the mobile terminal 100, whether a user touches the mobile terminal100, a direction of the mobile terminal 100, andacceleration/deceleration of the mobile terminal 100, and the sensingunit 140 may generate a sensing signal for controlling operation of themobile terminal 100. For example, in an example of a slide phone, thesensing unit 140 may sense whether the slide phone is opened or closed.Further, the sensing unit 140 may sense whether the power supply 190supplies power and/or whether The interface unit 170 is connected to anexternal device. The sensing unit 140 may also include a proximitysensor 141. The sensing unit 140 may sense a motion of the mobileterminal 100.

The output unit 150 may generate visual, auditory and/or tactile output,and the output unit 150 may include the display unit 151, an audiooutput module 152, an alarm unit 153 and a haptic module 154. Thedisplay unit 151 may display information processed by the mobileterminal 100. The display unit 151 may display a user interface (UI)and/or a graphic user interface (GUI) related to a telephone call whenthe mobile terminal 100 is in the call mode. The display unit 151 mayalso display a captured and/or received image, a UI or a GUI when themobile terminal 100 is in the video telephony mode or the photographingmode.

The display unit 151 may include at least one of a liquid crystaldisplay, a thin film transistor liquid crystal display, an organiclight-emitting diode display, a flexible display and/or athree-dimensional display. The display unit 151 may be of a transparenttype or a light transmissive type. That is, The display unit 151 mayinclude a transparent display.

The transparent display may be a transparent liquid crystal display. Arear structure of The display unit 151 may also be of a lighttransmissive type. Accordingly, a user may see an object located behindthe body (of the mobile terminal 100) through the transparent area ofthe body of the mobile terminal 100 that is occupied by The display unit151.

The mobile terminal 100 may also include at least two displays 151. Forexample, the mobile terminal 100 may include a plurality of displays 151that are arranged on a single face at a predetermined distance orintegrated displays. The plurality of displays 151 may also be arrangedon different sides.

When The display unit 151 and a sensor sensing touch (hereafter referredto as a touch sensor) form a layered structure that is referred to as atouch screen, The display unit 151 may be used as an input device inaddition to an output device. The touch sensor may be in the form of atouch film, a touch sheet, and/or a touch pad, for example.

The touch sensor may convert a variation in pressure applied to aspecific portion of The display unit 151 or a variation in capacitancegenerated at a specific portion of The display unit 151 into an electricinput signal. The touch sensor may sense pressure of touch as well asposition and area of the touch.

When the user applies a touch input to the touch sensor, a signalcorresponding to the touch input may be transmitted to a touchcontroller. The touch controller may then process the signal andtransmit data corresponding to the processed signal to the controller180. Accordingly, the controller 180 may detect a touched portion of Thedisplay unit 151.

The proximity sensor 141 (of the sensing unit 140) may be located in aninternal region of the mobile terminal 100, surrounded by the touchscreen, and/or near the touch screen. The proximity sensor 141 may sensean object approaching a predetermined sensing face or an object locatednear the proximity sensor 141 using an electromagnetic force or infraredrays without having mechanical contact. The proximity sensor 141 mayhave a lifetime longer than a contact sensor and may thus have a wideapplication in the mobile terminal 100.

The proximity sensor 141 may include a transmission type photo-electricsensor, a direct reflection type photo-electric sensor, a mirrorreflection type photo-electric sensor, a high-frequency oscillatingproximity sensor, a capacitive proximity sensor, a magnetic proximitysensor, and/or an infrared proximity sensor. A capacitive touch screenmay be constructed such that proximity of a pointer is detected througha variation in an electric field according to the proximity of thepointer. The touch screen (touch sensor) may be classified as aproximity sensor 141.

For ease of explanation, an action of the pointer approaching the touchscreen without actually touching the touch screen may be referred to asa proximity touch and an action of bringing the pointer into contactwith the touch screen may be referred to as a contact touch. Theproximity touch point of the pointer on the touch screen may correspondto a point of the touch screen at which the pointer is perpendicular tothe touch screen.

The proximity sensor 141 may sense the proximity touch and a proximitytouch pattern (e.g., a proximity touch distance, a proximity touchdirection, a proximity touch velocity, a proximity touch time, aproximity touch position, a proximity touch moving state, etc.).Information corresponding to the sensed proximity touch action andproximity touch pattern may then be displayed on the touch screen.

The audio output module 152 may output audio data received from thewireless communication unit 110 or stored in the memory 160 in a callsignal receiving mode, a telephone call mode or a recording mode, aspeech recognition mode and a broadcasting receiving mode. The audiooutput module 152 may output audio signals related to functions, such asa call signal incoming tone and a message incoming tone, performed inthe mobile terminal 100. The audio output module 152 may include areceiver, a speaker, a buzzer, and/or the like. The audio output module152 may output sounds through an earphone jack. The user may hear thesounds by connecting an earphone to the earphone jack.

The alarm unit 153 may output a signal for indicating generation of anevent of the mobile terminal 100. For example, an alarm may be generatedwhen receiving a call signal, receiving a message, inputting a keysignal, and/or inputting a touch. The alarm unit 153 may also outputsignals in forms different from video signals or audio signals, forexample, a signal for indicating generation of an event throughvibration. The video signals and/or the audio signals may also be outputthrough The display unit 151 or the audio output module 152.

The haptic module 154 may generate various haptic effects that the usercan feel. One example of the haptic effects is vibration. An intensityand/or pattern of vibration generated by the haptic module 154 may alsobe controlled. For example, different vibrations may be combined andoutput or may be sequentially output.

The haptic module 154 may generate a variety of haptic effects includingan effect of stimulus according to an arrangement of pins verticallymoving against a contact skin surface, an effect of stimulus accordingto a jet force or sucking force of air through a jet hole or a suckinghole, an effect of stimulus of rubbing the skin, an effect of stimulusaccording to contact of an electrode, an effect of stimulus using anelectrostatic force, and an effect according to a reproduction of coldand warmth using an element capable of absorbing or radiating heat inaddition to vibrations.

The haptic module 154 may not only transmit haptic effects throughdirect contact but may also allow the user to feel haptic effectsthrough a kinesthetic sense of the user's fingers or arms. The mobileterminal 100 may also include a plurality of haptic modules 154.

The memory 160 may store a program for operations of the controller 180and/or temporarily store input/output data such as a phone book,messages, still images, and/or moving images. The memory 160 may alsostore data about vibrations and sounds in various patterns that areoutput from when a touch input is applied to the touch screen.

The memory 160 may include at least a flash memory, a hard disk typememory, a multimedia card micro type memory, a card type memory, such asSD or XD memory, a random access memory (RAM), a static RAM (SRAM), aread-only memory (ROM), an electrically erasable programmable ROM(EEPROM), a programmable ROM (PROM) magnetic memory, a magnetic diskand/or an optical disk. The mobile terminal 100 may also operate inrelation to a web storage that performs a storing function of the memory160 on the Internet.

The interface unit 170 may serve as a path to external devices connectedto the mobile terminal 100. The interface unit 170 may receive data fromthe external devices or power and transmit the data or power to internalcomponents of the mobile terminal 100 or transmit data of the mobileterminal 100 to the external devices. For example, The interface unit170 may include a wired/wireless headset port, an external charger port,a wired/wireless data port, a memory card port, a port for connecting adevice having a user identification module, an audio I/O port, a videoI/O port, and/or an earphone port.

The interface unit 170 may also interface with a user identificationmodule that is a chip that stores information for authenticatingauthority to use the mobile terminal 100. For example, the useridentification module may be a user identify module (UIM), a subscriberidentify module (SIM) and/or a universal subscriber identify module(USIM). An identification device (including the user identificationmodule) may also be manufactured in the form of a smart card.Accordingly, the identification device may be connected to the mobileterminal 100 through a port of The interface unit 170.

The interface unit 170 may also be a path through which power from anexternal cradle is provided to the mobile terminal 100 when the mobileterminal 100 is connected to the external cradle or a path through whichvarious command signals input by the user through the cradle aretransmitted to the mobile terminal 100. The various command signals orpower input from the cradle may be used as signals for confirmingwhether the mobile terminal 100 is correctly set in the cradle.

The controller 180 may control overall operations of the mobile terminal100. For example, the controller 180 may perform control and processingfor voice communication, data communication and/or video telephony. Thecontroller 180 may also include a multimedia module 181 for playingmultimedia. The multimedia module 181 may be included in the controller180 or may be separated from the controller 180.

The controller 180 may perform a pattern recognition process capable ofrecognizing handwriting input or picture-drawing input applied to thetouch screen as characters or images. The power supply 190 may receiveexternal power and internal power and provide power required foroperations of the components of the mobile terminal 100 under control ofthe controller 180.

According to hardware implementation, embodiments may be implementedusing at least one of application specific integrated circuits (ASICs),digital signal processors (DSPs), digital signal processing devices(DSPDs), programmable logic devices (PLDs), field programmable gatearrays (FPGAs), processors, controllers, micro-controllers,microprocessors, and/or electrical units for executing functions.Embodiments may be implemented by the controller 180.

According to software implementation, embodiments such as procedures orfunctions may be implemented with a separate software module thatexecutes at least one function or operation. Software codes may beimplemented according to a software application written in anappropriate software language. The software codes may be stored in thememory 160 and executed by the controller 180.

FIG. 2 is a front perspective view of a mobile terminal or a handheldterminal 100 according to an example embodiment of the presentinvention. The handheld terminal 100 has a bar type terminal body.However, the present invention is not limited to a bar type terminal andcan be applied to terminals of various types including slide type,folder type, swing type and swivel type terminals having at least twobodies that are relatively movably combined.

The terminal body includes a case (a casing, a housing, a cover, etc.)forming the exterior of the terminal 100. In the present embodiment, thecase can be divided into a front case 101 and a rear case 102. Variouselectronic components are arranged in the space formed between the frontcase 101 and the rear case 102. At least one middle case can beadditionally arranged between the front case 101 and the rear case 102.The cases can be formed of plastics through injection molding or made ofa metal material such as stainless steel (STS) or titanium (Ti).

The display unit 151, the audio output unit 152, the camera 121, theuser input unit 130/131 and 132, the microphone 122 and the interfaceunit 170 can be arranged in the terminal body, specifically, in thefront case 101. The display unit 151 occupies most part of the main faceof the front case 101. The audio output unit 152 and the camera 121 arearranged in a region in proximity to one of both ends of the displayunit 151 and the user input unit 131 and the microphone 122 are locatedin a region in proximity to the other end of the display unit 151. Theuser input unit 132 and The interface unit 170 are arranged on the sidesof the front case 101 and the rear case 102.

The user input unit 130 is operated to receive commands for controllingthe operation of the handheld terminal 100 and can include a pluralityof operating units 131 and 132. The operating units 131 and 132 can bereferred to as manipulating portions and employ any tactile manner inwhich a user operates the operating units 131 and 132 while havingtactile feeling. First and second operating units 131 and 132 canreceive various inputs. For example, the first operating unit 131receives commands such as start, end and scroll and the second operatingunit 132 receives commands such as control of the volume of sound outputfrom the audio output unit 152 or conversion of the display unit 151 toa touch recognition mode.

FIG. 3 is a rear perspective view of the handheld terminal shown in FIG.2 according to an embodiment of the present invention.

Referring to FIG. 3, a camera 121′ can be additionally attached to therear side of the terminal body, that is, the rear case 102. The camera121′ has a photographing direction opposite to that of the camera 121shown in FIG. 2 and can have pixels different from those of the camera121 shown in FIG. 2.

For example, it is desirable that the camera 121 has low pixels suchthat it can capture an image of the face of a user and transmit theimage to a receiving part in case of video telephony while the camera121′ has high pixels because it captures an image of a general objectand does not immediately transmit the image in many cases. The cameras121 and 121′ can be attached to the terminal body such that they can berotated or pop-up.

A flash bulb 123 and a mirror 124 are additionally arranged in proximityto the camera 121′. The flash bulb 123 lights an object when the camera121′ takes a picture of the object. The mirror 124 is used for the userto look at his/her face in the mirror when the user wants toself-photograph himself/herself using the camera 121′.

An audio output unit 152′ can be additionally provided on the rear sideof the terminal body. The audio output unit 152′ can achieve a stereofunction with the audio output unit 152 shown in FIG. 2 and be used fora speaker phone mode when the terminal is used for a telephone call.

A broadcasting signal receiving antenna can be additionally attached tothe side of the terminal body in addition to an antenna for telephonecalls. The antenna constructing a part of the broadcasting receivingmodule 111 shown in FIG. 1 can be set in the terminal body such that theantenna 124 can be pulled out of the terminal body. The power supply 190for providing power to the handheld terminal 100 is set in the terminalbody. The power supply 190 can be included in the terminal body ordetachably attached to the terminal body.

A touch pad 135 for sensing touch can be additionally attached to therear case 102. The touch pad 135 can be of a light transmission type asthe display unit 151. In this case, if the display unit 151 outputsvisual information through both sides thereof, the visual informationcan be recognized through the touch pad 135. The information outputthrough both sides of the display unit 151 can be controlled by thetouch pad 135. Otherwise, a display is additionally attached to thetouch pad 135 such that a touch screen can be arranged even in the rearcase 102.

The touch pad 135 operates in connection with the display unit 151 ofthe front case 101. The touch pad 135 can be located in parallel withthe display unit 151 behind the display unit 151. The touch panel 135can be identical to or smaller than the display unit 151 in size.

Next, FIG. 4. is a conceptual view illustrating a proximity depth of theproximity sensor 141. As shown in FIG. 4, when a pointer such as theuser's finger, a pen, or the like, approaches the touch screen, theproximity sensor 141 disposed within or near the touch screen detects itand outputs a proximity signal. The proximity sensor 141 may also beconfigured to output a different proximity signal according to thedistance (referred to as a ‘proximity depth’, hereinafter) between theclosely touched pointer and the touch screen.

FIG. 4. also shows the section of the touch screen with the proximitysensor 141 for detecting, for example, three proximity depths. Theproximity sensor 141 may detect three or less or four or more proximitydepths. In more detail, when the pointer is fully brought into contactwith the touch screen d0, this position is recognized as a contacttouch. When the pointer is positioned to be spaced apart by shorter thana distance d1 on the touch screen, this position is recognized as aproximity touch with a first proximity depth.

If the pointer is positioned to be spaced apart by the distance longerthan the distance d1 but shorter than a distance d2 on the touch screen,this position is recognized as a proximity touch with a second proximitydepth. Also, if the pointer is positioned to be spaced apart by thedistance longer than the distance d2 but shorter than a distance d3,this position is recognized as a proximity touch with a third proximitydepth. If the pointer is positioned to be spaced apart by longer thanthe distance d3 on the touch screen, this position is recognized thatthe proximity touch has been released.

Accordingly, the controller 180 can recognize the proximity touches asvarious input signals according to the proximity depths and proximitypositions of the pointer, and control various operations according tothe various input signals.

FIGS. 5 and 6 are views for explaining a method of displaying astereoscopic image using binocular parallax according to embodiments ofthe present invention. FIG. 5 illustrates a method using a lenticularlens array and FIG. 6 illustrates a method using a parallax barrier.

Binocular parallax refers to the apparent difference in position of anobject as seen separately by one eye, and then by the other. When thebrain of a person combines an image viewed through the left eye and animage viewed through the right eye, the combined image is seen as astereoscopic image by the person.

In the following description, the phenomenon that a person feelsstereoscopic effect according to binocular parallax is called‘stereoscopic vision’ and an image that generates stereoscopic vision iscalled ‘stereoscopic image’. The stereoscopic image can use a movingimage or a still image.

An object included in a stereoscopic image is referred to as‘stereoscopic object’ and content generated such that it causesstereoscopic vision is referred to as ‘stereoscopic content’. Thestereoscopic content may include a stereoscopic image, a stereoscopicobject, etc.

Methods of displaying a stereoscopic image using the binocular parallaxare classified into a stereoscopic method and an auto-stereoscopicmethod.

The stereoscopic method includes a method using shades having wavelengthselectivity, a patterned retarder method using light-shielding effectaccording polarization difference, and a field sequential glasses methodthat alternately provides left and right images within the afterimagelag time of eyes. In addition, there is a method that sets filtershaving difference transmittance for left and right eyes and obtainsstereoscopic effect with respect to motion to the left and rightaccording to a time difference of the visual system, caused by thetransmittance difference.

The auto-stereoscopic method that causes stereoscopic effect at the sideof an image display plane instead of an observer includes a method usinga parallax barrier, a method using a lenticular lens, a method using amicrolens array, etc.

Referring to FIG. 5, the display unit 151 includes a lenticular lensarray 11 a in order to display a stereoscopic image. The lenticular lensarray 11 a is located between a display plane 13 on which a pixel L tobe viewed by the left eye 12 a and a pixel R to be viewed by the righteye 12 b are alternately arranged in the horizontal direction and theleft and right eyes 12 a and 12 b and provides optical discriminationdirectivity for the pixel L and the pixel R. Accordingly, an image thathas passed through the lenticular lens array 11 a is divided andobserved by the left eye 12 a and the right eye 12 b, and the humanbrain combines the image viewed through the left eye 12 a and the imageviewed through the right eye 12 b so as to see a stereoscopic image.

Referring to FIG. 6, the display unit 151 includes a parallax barrier 11b in the form of a vertical lattice to display a stereoscopic image. Theparallel barrier 11 b is located between the display plane 13 on whichthe pixel L to be viewed by the left eye 12 a and the pixel R to beviewed by the right eye 12 b are alternately arranged in the horizontaldirection and the left and right eyes 12 a and 12 b, and an image isdivided at the left eye 12 a and the right eye 12 b through apertures inthe form of a vertical lattice and viewed. Accordingly, the human braincombines then image viewed through the left eye 12 a and the imageviewed through the right eye 12 b to see a stereoscopic image. Theparallax barrier 11 b is turned on only when a stereoscopic image isdisplayed to separate incidence views and turned off when a plane imageis displayed to pass the incidence views without separating them.

The above stereoscopic image display methods merely describe the presentinvention and the present invention is not limited thereto. The presentinvention can display a stereoscopic image using binocular parallaxthrough various methods in addition to the above-described methods.

Exemplary embodiments of the present invention will now be described.

The embodiments can be implemented in the mobile terminal 100 describedwith reference to FIGS. 1 to 4.

The display unit 151 may include a panel for generating stereoscopicvision. The panel can have a structure for generating stereoscopicvision through the method using a lenticular lens or the method using aparallax barrier, as described above.

It is assumed that the display unit 151 is a touch screen forconvenience of description. As described above, the touch screen 151 canperform both the information display function and information inputfunction, as described above. However, the present invention is notlimited thereto.

In the specification, a touch gesture means a gesture corresponding tocontact touch or proximity touch, and touch input means input receivedby a touch gesture.

Touch gestures are divided into tapping, drag, flicking, press,multi-touch, pinch-in, pinch-output, etc.

Tapping refers to a motion of slightly pressing the touch screen 151 andreleasing the touch and corresponds to a touch gesture such as clickingof a mouse of a computer.

Drag is a motion of touching the touch screen 151, moving the touch to aspecific point and releasing the touch. When an object is dragged, theobject may be moved and displayed in the drag direction.

Flicking refers to a motion of touching the touch screen 151, moving thetouch to a specific direction (up, down, left, right, or diagonaldirection) and then releasing the touch. Upon reception of touch inputby flicking, the mobile terminal 100 processes a specific operation onthe basis of a flicking direction, speed, etc. For example, the mobileterminal 100 can perform an operation of turning over the pages ofe-boom on the basis of a flicking direction.

Press refers to a motion of touching the touch screen 151 and thenmaintaining the touch for a predetermined time or longer.

Multi-touch refers to a motion of simultaneously touching a plurality ofpoints of the touch screen 151.

Pinch-in refers to a motion of dragging a plurality of pointers that aremulti-touching the touch screen 151 to a direction in which the pointersbecome close to one another. That is, pinch-in means drag started fromat least one of the multi-touched points and generated in a direction inwhich the points become close to one another.

Pinch-out refers to a motion of dragging a plurality of pointers thatare multi-touching the touch screen 151 to a direction in which thepointers become apart from one another. That is, pinch-out means dragstarted from at least one of multi-touched points and generated in adirection in which the points become apart from one another.

In the specification, the sensing unit 140 can obtain a rotationvelocity or angular velocity according to rotation of the mobileterminal on an axis, that is, rotation of the mobile terminal 100 usinga gyroscope. Furthermore, the sensing unit 140 can obtain accelerationof gravity according to movement of the mobile terminal 100 through anaccelerometer. In addition, the sensing unit 140 can obtain theorientation of the mobile terminal 100 like a compass through a magneticsensor.

The controller 180 can obtain a motion of the mobile terminal 100 on thebasis of at least one of the angular velocity acquired through thegyroscope, the acceleration of gravity, acquired through accelerometer,and the orientation of the mobile terminal 100 acquired through themagnetic sensor. For example, when the mobile terminal 100 rotates on anaxis that traverses the body of the mobile terminal 100 vertically orhorizontally, the controller 180 can acquire a tilting state of themobile terminal 100, which includes a tilting degree, tilting velocity,tilting direction, etc. of the body of the mobile terminal 100.

In the specification, motions of the mobile terminal 100 are defined as‘tilting’, ‘snapping’, ‘shaking’, ‘flicking’, and ‘tapping’.

Tilting and snapping mean a motion of tilting the mobile terminal 100and may be discriminated from each other on the basis of a rotatingvelocity of the mobile terminal 100.

Tilting refers to a motion of tilting the mobile terminal 100 at lowerthan a predetermined velocity and snapping refers to a motion of tiltingthe mobile terminal 100 at higher than the predetermined velocity.

Shaking refers to a motion of consecutively snapping the mobile terminal100 at least twice. Flicking refers to a motion of turning the mobileterminal 100. That is, flicking means a motion of changing thedirections of the front side and the rear side of the mobile terminal100.

Tapping refers to a motion of lightly tapping the surface of the mobileterminal 100. Tapping can be sensed through a gyroscope, a magneticsensor, an accelerometer, etc. as well as a touch sensor.

A method of controlling the mobile terminal 100 according to a firstembodiment of the invention and operations of the mobile terminal 100 toimplement the control method will now be described in detail withreference to FIGS. 7 to 10.

FIG. 7 is a flowchart illustrating the mobile terminal according to thefirst embodiment of the invention and FIGS. 8 and 9 are views forexplaining the control method shown in FIG. 7.

Referring to FIG. 7, the controller 180 locks a specific mode of themobile terminal 100 (S101).

For example, the specific mode may be a mode in which information or acommand can be received from a user through a touch operation of theuser via the touch screen 151. This mode can be called an activationmode. In the case of a terminal employing a touch screen, the touchscreen is generally controlled to be locked to prevent an erroneousoperation when the user does not manipulate the terminal for apredetermined time.

A case in which the specific mode is the activation mode of the touchscreen 151 will now be described as an example. However, it is notedthat the specific mode is not limited to the activation mode.

Upon reception of a control input for requesting the locked specificmode to be unlocked, the controller 180 arranges a plurality of figuresfor receiving an unlocking pattern on the touch screen (S102).

The unlocking pattern is used as authentication information fordetermining whether to unlock the specific mode and may be generated inthe form of at least one trajectory that connect some of the pluralityof figures or in the order of touching some of the plurality of figures.

When the plurality of figures for receiving the unlocking pattern isinitially arranged in step S102, the plurality of figures may bearranged in a first area.

FIG. 8 shows an example of initially arranging the figures for receivingthe unlocking pattern.

Referring to FIG. 8, the controller 180 can arrange FIGS. 8a as pointsat a predetermined interval on the same plane. The controller 180 evenlyarranges the figures on the overall screen.

Referring back to FIG. 7, upon reception of a specific input while thefigures for receiving the unlocking pattern are displayed (S103), thecontroller 180 changes the area in which the figures are displayed. Thatis, the controller 180 rearranges and displays the figures in thechanged area (S104).

FIG. 9 shows an example of rearranging the figures.

Referring to FIG. 9(a), the controller displays the figures forreceiving the unlocking pattern in a first area 9 a.

When the user drags the first area 9 a, the controller 180 re-sets anarea in which the figures will be displayed on the basis of thedirection and distance of the drag. That is, the controller 180 sets asecond area 9 b reduced from the first area 9 a as the area in which thefigures will be displayed and rearranges the figures in the second area9 b.

Referring back to FIG. 7, the controller 180 receives a pattern usingthe figures displayed on the screen (S105).

When the received pattern corresponds to a previously stored unlockingpattern (S106), the controller 180 unlocks the specific mode (S106).That is, the controller 180 controls the mobile terminal 100 to operatein the activation mode of the touch screen 151.

When the user inputs a pattern using the figures in step S105, thecontroller 180 can display the touched figures such that the touchedfigures are distinguished from other figures or display a trajectoryformed by the touched figures on the screen to allow the user tointuitively recognize the pattern input by him/her.

FIG. 10 shows an example of receiving the unlocking pattern usingfigures.

Referring to FIG. 10, the controller 180 receives a pattern 10 acorresponding to figures a1 to a5 touched by the user while theplurality of figures is displayed in the second area.

The pattern 10 a can include the order of touching the figures a1 to a5by the user or a trajectory formed by the touched figures a1 to a5.

The controller 180 compares the received pattern 10 a with thepreviously stored unlocking pattern and unlocks the touch screen 151when the two patterns correspond to each other.

As described above, according to the first embodiment of the presentinvention, it is possible to change the area in which the figures forreceiving the unlocking pattern are displayed according to user input.Accordingly, the user can move the figures to a position at which theuser conveniently inputs the unlocking pattern. Particularly, when theuser has difficulty in inputting the unlocking pattern with one handbecause the touch screen of the mobile terminal 100 is large, the usercan move the figures to a position at which he/she can easily input thepattern, thereby improving user convenience.

While display positions of the figures are moved while the figures aredisplayed when an unlocking request for the specific mode is receivedfrom the user in the first embodiment of the present invention, thepresent invention is not limited thereto. According to exemplaryembodiments of the present invention, the controller 180 can change thedisplay positions of the figures using an additional screen for settingthe display positions of the figures. In this case, the controller 180displays the figures in an area set through the additional screen at theuser's request for unlocking the specific mode.

Furthermore, while the display positions of the figures are changedusing drag input in the first embodiment of the present invention, thepresent invention is not limited thereto. According to the presentinvention, the controller 180 can change the display positions of thefigures on the basis of inputs in different forms, such as buttonmanipulation, tapping, tilting of the mobile terminal 100, etc.

A method of controlling the mobile terminal 100 according to a secondembodiment of the present invention and operations of the mobileterminal 100 to implement the control method will now be described withreference to FIGS. 11 to 15.

FIG. 11 is a flowchart illustrating the method of controlling the mobileterminal 100 according to the second embodiment of the present inventionand FIGS. 12 to 15 are views for explaining the control method shown inFIG. 11.

Referring to FIG. 11, the controller 180 locks a specific mode of themobile terminal 100 (S201).

Upon reception of a control input for requesting the specific mode to beunlocked, the controller 180 arranges a plurality of figures forreceiving an unlocking pattern (S202).

The controller 180 can display tridimensionality and arrange figures onthe surface of the tridimensionality in step S202. In this case, thecontroller 180 can receive an unlocking pattern corresponding to atrajectory formed by some figures arranged on the surface of thetridimensionality or the order of touching the figures.

The controller 180 may combine the figures in the form oftridimensionality and display the figures in step S202. In this case,the controller 180 can receive the unlocking pattern corresponding toarrangement or arrangement positions of the figures.

When the controller 180 arranges the figures on the surface of thetridimensionality or combines the figures to display tridimensionalityin step S202, it is possible to achieve 3-dimensional effect of thetridimensionality by controlling display characteristics such as shadowor acquire 3-dimensional effect of the tridimensionality using binocularparallax by activating the panel for producing stereoscopic vision.

FIGS. 12 and 13 show examples of arranging the figures used to receivethe unlocking pattern.

Referring to FIG. 12, the controller 180 displays a sphericaltridimensionality 12 c on the screen and arranges FIGS. 12d and 12e inthe form of a dot on the surface of the tridimensionality 12 c at apredetermined interval.

The spherical tridimensionality can be rotated and the composition ofthe figures displayed on the screen can be changed as the sphericaltridimensionality rotates. That is, the surface of the sphere 12displayed on the screen is changed when the sphere 12 rotates, and thusthe composition of the figures displayed on the screen can be changed tocorrespond to the changed surface.

When the figures are arranged on the surface of the tridimensionality,the controller 180 may control a display characteristic such as color tobe different for the respective figures or respectively allocatingdifferent identification information to the respective figures such thatthe figures can be distinguished even when the composition of thefigures is changed according to rotation of the tridimensionality.

Referring to FIG. 12, the controller 180 displays differentidentification information on the respective figures such that the usercan identify the figures even when the composition of the figures ischanged.

Referring to FIG. 13, the user 180 uses cubic FIG. 13a in order toreceive the unlocking pattern. The cubic FIG. 13a form a cube puzzle.

Figure groups respectively corresponding to rows or columns of the cubepuzzle 13 b can be rotated on a principle similar to the cube operationprinciple, and figures are rearranged as they rotate.

As shown in FIG. 13, when the figures are arranged in the form of a cubepuzzle, a pattern of the colors of figures arranged on the front face ofthe cube puzzle can be used as the unlocking pattern. Accordingly, thecontroller 180 can divide the figures into a plurality of groupsrespectively corresponding different colors.

Referring back to FIG. 11, when a specific input is received while thefigures for receiving the unlocking pattern are displayed (S203), thecontroller 180 rearranges at least some figures displayed on the screen(S204).

The specific input can be applied in various manners in step S203.

For example, the specific input can be applied through a touch gesture.In this case, the controller 180 can rearrange the figures displayed onthe screen on the basis of a touch position on the screen, a dragdirection, etc.

Furthermore, the specific input can be applied according to a motion ofthe mobile terminal 100. In this case, the controller 180 can rearrangethe figures on the basis of the direction and degree of the motion ofthe mobile terminal 100.

When the figures are arranged on the surface of the tridimensionality,the controller 180 can rotate the tridimensionality on which the figuresare arranged upon receiving the specific input in steps S203 and S204.Accordingly, the surface of the tridimensionality displayed on thescreen is changed and the figures corresponding to the changed surfaceare displayed on the screen.

Furthermore, the controller 180 can change arrangement of the figuresupon receiving the specific input in steps S203 and S204. That is, thecontroller 180 can change arrangement of at least some figures when thespecific input is received.

FIGS. 14 and 15 show examples of rearranging the figures.

Referring to FIG. 14, when the mobile terminal 100 tilts, the controller180 rotates and displays the spherical tridimensionality 12 c on thebasis of the tilting direction, etc. When the area displayed on thescreen is changed due to rotation of the tridimensionality, thecontroller 180 changes the composition of the figures displayed on thescreen in response to the change of the area.

For example, the FIG. 12e represented by ‘c’ is arranged on the frontface of the sphere 12 c and the FIG. 12d represented by ‘a’ is arrangedon the top face of the sphere 12 c in FIG. 12, whereas the FIG. 12drepresented by ‘a’ is located on the front face of the sphere 12 d andthe FIG. 12e represented by ‘c’ is arranged on the bottom face of thesphere 12 c according to rotation of the tridimensionality in FIG. 14.

Referring to FIG. 15, when the cube puzzle 13 a is dragged, thecontroller 180 rotates figures corresponding to a row 15 a includingtouched figures in the cube puzzle 13 a on the basis of the dragdirection. Accordingly, figures arranged on the front face of the cubepuzzle 13 a are changed and a color pattern corresponding to the frontface of the cube puzzle 13 a is changed according to rearrangement ofthe figures on the front face of the cube puzzle 13 a.

Referring back to FIG. 11, the controller 180 receives a pattern on thebasis of user input applied to figures (S205). The controller 180compares the received pattern with the previously stored unlockingpattern (S206), and unlocks the locked specific mode when the twopatterns correspond to each other (S207). That is, the controller 180controls the touch screen 151 to operate in the activation mode.

The controller 180 can receive the pattern on the basis of the order oftouching figures displayed on the surface of the tridimensionality or atrajectory formed by the touched figures in step S205. In this case, thecontroller 180 can display the touched figures such that the touchedfigures are distinguished from other figures or display the trajectoryformed by the touched figures such that the user can intuitivelyrecognize the pattern input by him/her.

Furthermore, the controller 180 may receive the pattern on the basis ofarrangement or arrangement positions of the figures in step S205.

According to the above-described second embodiment of the presentinvention, the mobile terminal 100 can rotate tridimensionality orchange arrangement of figures three-dimensionally. Accordingly, the usercan have fun inputting the unlocking pattern, compared to the case inwhich the user inputs the pattern using fixed figures.

A method of controlling the mobile terminal 100 according to a thirdembodiment of the present invention and operations of the mobileterminal 100 to implement the control method will now be described withreference to FIGS. 16 to 19.

FIG. 16 is a flowchart illustrating the method of controlling the mobileterminal 100 according to the third embodiment of the present inventionand FIGS. 17 to 19 are views for explaining the control method shown inFIG. 16.

Referring to FIG. 16, the controller 180 locks a specific mode of themobile terminal 100 (S301).

Upon reception of a control input for requesting the specific mode to beunlocked, the controller 180 display a plurality of figures forreceiving an unlocking pattern as stereoscopic objects (S302).

FIGS. 17 and 18 show examples of displaying the figures as stereoscopicobjects.

Referring to FIG. 17, the controller 180 divides the plurality offigures into two groups and controls depths of the figures according tostereoscopic vision such that the groups have different depths. That is,the controller 180 controls the depths of the figures according tostereoscopic vision thereof such that one group is seen as if it isprotruded from the display plane and the other is seen as if it islocated on the display plane.

For example, the controller 180 can set the depth of FIG. 17a belongingto the first group such that the FIG. 17a are seen as if they areprotruded from the display plane and set the depth of FIG. 17b belongingto the second group such that the FIG. 17b are seen as if they arelocated on the display plane.

Referring to FIG. 18, the controller 180 displays FIG. 18a in the formof a button on the display. The controller 180 sets the depth of theFIG. 18a according to stereoscopic vision thereof such that the figuresare seen as if they are protruded from the display plane.

Referring back to FIG. 16, the controller 180 receives a pattern on thebasis of proximity touch or contact touch input of the user, applied tosome of the figures displayed on the screen (S303).

The controller 180 compares the received pattern with the previouslystored unlocking pattern (S304) and unlocks the locked specific modewhen the two patterns correspond to each other (S305). That is, thecontroller 180 controls the touch screen 151 to operate in theactivation mode.

The controller 180 can receive the pattern according to contact touch orproximity touch on the basis of the depth of each figure according tostereoscopic vision thereof in step S303.

For example, when the figures are displayed in different depths, asshown in FIG. 17, the controller 180 can receive input on the basis ofproximity touch for the FIG. 17a that are seen as if they are protrudedfrom the display plane and receive input on the basis of contact touchfor the FIG. 17b that are seen as if they are located on the displayplane.

In this case, when some figures are touched according to contact touchor proximity touch, the controller 180 can receive the patterncorresponding to the trajectory generated on the basis of the order oftouching the figures or the order of touching the figures.

Furthermore, when figures are displayed such that the figures are seenas if they are protruded from the display plane, as shown in FIG. 18,the controller 180 can receive input applied to the figures on the basisof contact touch.

In this case, the controller 180 can change the depth of the figurestouched according to proximity touch and receive the patterncorresponding to the changed depth of the figures.

FIG. 19 shows an example of receiving the pattern using the figuresshown in FIG. 18.

Referring to FIG. 19, when specific FIG. 18a are proximity-touched bythe user, the controller 180 controls the depth of the FIG. 18a to beseen as if they are recessed as compared to other figures. In thismanner, the controller 180 changes the depth of the FIG. 18a accordingto stereoscopic vision thereof and receives a pattern on the basis ofthe changed depth of the figures.

The controller 180 can permit each FIG. 18a to be repeatedly touched andcontrol the depth of each FIG. 18a on the basis of the number or touchesin stages. Furthermore, the controller 180 can change a degree by whichthe depth of each figure is changed according to touch methods.

For example, the controller 180 can control the depth of the FIG. 18awhen the FIG. 18a is touched once to be seen deeper than the depth ofthe FIG. 18a when it is touched twice.

Furthermore, the controller 180 can control the depth of the FIG. 18awhen the FIG. 19a is dragged to be seen deeper than the depth of theFIG. 18a when it is touched by tapping.

According to the third embodiment of the present invention, theunlocking pattern of the mobile terminal 100 is input using astereoscopic object, and thus the user can experience stereoscopicvision as if he/she actually presses a button when inputting theunlocking pattern. Furthermore, it is possible to increase complexity ofthe unlocking pattern while minimizing complexity of unlocking patterninput process.

The above-described methods of controlling the mobile terminal may bewritten as computer programs and may be implemented in digitalmicroprocessors that execute the programs using a computer readablerecording medium. The method of controlling the mobile terminal may beexecuted through software. The software may include code segments thatperform required tasks. Programs or code segments may also be stored ina processor readable medium or may be transmitted according to acomputer data signal combined with a carrier through a transmissionmedium or communication network.

The computer readable recording medium may be any data storage devicethat can store data that can be thereafter read by a computer system.Examples of the computer readable recording medium may include read-onlymemory (ROM), random-access memory (RAM), CD-ROMs, DVD±ROM, DVD-RAM,magnetic tapes, floppy disks, optical data storage devices. The computerreadable recording medium may also be distributed over network coupledcomputer systems so that the computer readable code is stored andexecuted in a distribution fashion.

A mobile terminal may include a first touch screen configured to displaya first object, a second touch screen configured to display a secondobject, and a controller configured to receive a first touch inputapplied to the first object and to link the first object to a functioncorresponding to the second object when receiving a second touch inputapplied to the second object while the first touch input is maintained.

A method may be provided of controlling a mobile terminal that includesdisplaying a first object on the first touch screen, displaying a secondobject on the second touch screen, receiving a first touch input appliedto the first object, and linking the first object to a functioncorresponding to the second object when a second touch input applied tothe second object is received while the first touch input is maintained.

Any reference in this specification to “one embodiment,” “anembodiment,” “example embodiment,” etc., means that a particularfeature, structure, or characteristic described in connection with theembodiment is included in at least one embodiment of the invention. Theappearances of such phrases in various places in the specification arenot necessarily all referring to the same embodiment. Further, when aparticular feature, structure, or characteristic is described inconnection with any embodiment, it is submitted that it is within thepurview of one skilled in the art to effect such feature, structure, orcharacteristic in connection with other ones of the embodiments.

Although exemplary embodiments have been described with reference to anumber of illustrative embodiments thereof, it should be understood thatnumerous other modifications and embodiments can be devised by thoseskilled in the art that will fall within the spirit and scope of theprinciples of this disclosure. More particularly, various variations andmodifications are possible in the component parts and/or arrangements ofthe subject combination arrangement within the scope of the disclosure,the drawings and the appended claims. In addition to variations andmodifications in the component parts and/or arrangements, alternativeuses will also be apparent to those skilled in the art.

What is claimed is:
 1. A mobile terminal, comprising: a touch screenlocated on a first side of the mobile terminal; an input unit located onthe first side of the mobile terminal; a memory configured to store anunlocking pattern; and a controller configured to: cause the touchscreen to display a first plurality of figures in a first area of thetouch screen for a period time during a locked mode; cause the touchscreen to display a second plurality of figures in a second area of thetouch screen in response to receiving an input at the touch screen,wherein the second area is located at a different location of the touchscreen than the first area, wherein the displaying of the secondplurality of figures occurs for a period of time during the locked mode,and wherein a number of figures that define the first plurality offigures is same as a number of figures that define the second pluralityof figures, and wherein the input at the touch screen is received duringa period of time that the first plurality of figures is displayed; causethe touch screen to display a screen in an unlocked mode when a touchpattern received at the second area of the touch screen corresponds tothe stored unlocking pattern; and cause the touch screen to display ascreen in an unlocked mode when a touch pattern received at the firstarea of the touch screen corresponds to the stored unlocking pattern. 2.The mobile terminal of claim 1, wherein the input at the touch screen isa tapping input.
 3. The mobile terminal of claim 1, wherein the firstplurality of figures are displayed in a row-column format in whichadjacent figures within a row are located at a first interval distancerelative to each other; and wherein the second plurality of figures aredisplayed in a row-column format in which adjacent figures within a roware located at a second interval distance relative to each other, andwherein the second interval distance is less than the first intervaldistance.
 4. The mobile terminal of claim 1, wherein the controller isfurther configured to: cause the touch screen to display the screen inthe unlocked mode when the touch pattern is received at the second areain a particular order at particular figures of the second plurality offigures.
 5. The mobile terminal of claim 1, wherein the touch patternreceived at the second area represents a touch input received atparticular figures of the second plurality of figures.
 6. The mobileterminal of claim 1, wherein the touch pattern received at the secondarea represents a drag input received at two or more adjacent figures ofthe second plurality of figures.
 7. The mobile terminal of claim 1,wherein the touch pattern received at the second area is a tapping. 8.The mobile terminal of claim 1, wherein the first plurality of figuresare the same as the second plurality of figures.
 9. An unlocking methodfor a mobile terminal having a touch screen and an input unit, themethod comprising: displaying, on the touch screen, a first plurality offigures in a first area of the touch screen for a period time during alocked mode; displaying, on the touch screen, a second plurality offigures in a second area of the touch screen in response to receiving aninput at the touch screen, wherein the second area is located at adifferent location of the touch screen than the first area, wherein thedisplaying of the second plurality of figures occurs for a period oftime during the locked mode, and wherein a number of figures that definethe first plurality of figures is same as a number of figures thatdefine the second plurality of figures, and wherein the input at thetouch screen is received during a period of time that the firstplurality of figures is displayed; displaying, on the touch screen, ascreen in an unlocked mode when a touch pattern received at the secondarea of the touch screen corresponds to a stored unlocking pattern; anddisplaying, on the touch screen, a screen in an unlocked mode when atouch pattern received at the first area of the touch screen correspondsto the stored unlocking pattern.